*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: "Segoe UI", -apple-system, Arial, sans-serif; color: #1a1a2e; background: #fff; line-height: 1.6; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
:root { --primary: #1a6fa8; --red: #d63031; --red-dark: #b02020; --dark: #1a1a2e; --gray: #6b7280; --light-bg: #f0f4f8; --white: #ffffff; --border: #e5e7eb; --shadow: 0 2px 16px rgba(0,0,0,0.08); --radius: 10px; --tr: 0.25s ease; }
.container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.97); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); transition: box-shadow var(--tr); }
.site-header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.12); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo-link { display: flex; align-items: center; gap: 10px; }
.logo-box { width: 44px; height: 44px; background: var(--primary); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-weight: 900; font-size: 0.85rem; color: #fff; flex-shrink: 0; }
.logo-img { height: 44px; width: auto; object-fit: contain; }
.logo-text .name { font-size: 1rem; font-weight: 700; color: var(--dark); line-height: 1.2; }
.logo-text .sub { font-size: 0.72rem; color: var(--gray); }
.main-nav ul { display: flex; align-items: center; gap: 4px; }
.main-nav a { display: block; padding: 8px 16px; font-size: 0.9rem; font-weight: 500; color: var(--dark); border-radius: 6px; transition: color var(--tr), background var(--tr); }
.main-nav a:hover { color: var(--primary); background: #f0f7ff; }
.main-nav a.active { color: #fff; background: var(--primary); }
.nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--dark); padding: 4px 8px; }
.hero-section { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; background: #e8eef4; }
.hero-bg { position: absolute; inset: 0; background-image: url("https://images.unsplash.com/photo-1504307651254-35680f356dfd?w=1600&q=80"); background-size: cover; background-position: center; opacity: 0.18; }
.hero-content { position: relative; z-index: 2; max-width: 620px; padding: 120px 0 80px; }
.hero-content h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 800; line-height: 1.15; color: var(--dark); margin-bottom: 20px; }
.hero-content h1 span { color: var(--primary); }
.hero-content p { font-size: 1.05rem; color: var(--gray); margin-bottom: 36px; max-width: 500px; line-height: 1.7; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-red { display: inline-flex; align-items: center; gap: 8px; padding: 14px 28px; background: var(--red); color: #fff; font-weight: 600; font-size: 0.95rem; border-radius: 8px; border: none; cursor: pointer; transition: background var(--tr), transform var(--tr); }
.btn-red:hover { background: var(--red-dark); transform: translateY(-2px); }
.btn-outline { display: inline-flex; align-items: center; gap: 8px; padding: 14px 28px; background: transparent; color: var(--dark); font-weight: 600; font-size: 0.95rem; border-radius: 8px; border: 1.5px solid var(--border); cursor: pointer; transition: border-color var(--tr), color var(--tr); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.hero-scroll { position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--gray); font-size: 0.8rem; animation: bounce 2s infinite; }
@keyframes bounce { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; color: var(--dark); margin-bottom: 14px; }
.section-header p { font-size: 1rem; color: var(--gray); max-width: 560px; margin: 0 auto; line-height: 1.7; }
.about-section { padding: 96px 0; background: var(--light-bg); position: relative; overflow: hidden; }
.about-bg { position: absolute; inset: 0; background-image: url("https://images.unsplash.com/photo-1565008447742-97f6f38c985c?w=1200&q=60"); background-size: cover; background-position: center; opacity: 0.06; }
.about-section .section-header { position: relative; z-index: 1; }
.stats-grid { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat-card { background: var(--white); border-radius: var(--radius); padding: 32px 24px; text-align: center; box-shadow: var(--shadow); border: 1px solid var(--border); transition: transform var(--tr), box-shadow var(--tr); }
.stat-card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,0,0,0.12); }
.stat-icon { font-size: 2rem; margin-bottom: 12px; display: block; }
.stat-icon.red { color: var(--red); }
.stat-icon.blue { color: var(--primary); }
.stat-number { font-size: 2.2rem; font-weight: 800; color: var(--dark); line-height: 1; margin-bottom: 8px; }
.stat-label { font-size: 0.85rem; color: var(--gray); font-weight: 500; }
.services-section { padding: 96px 0; background: var(--white); }
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.service-card { background: var(--white); border: 1.5px solid var(--border); border-radius: var(--radius); padding: 32px; transition: border-color var(--tr), box-shadow var(--tr), transform var(--tr); }
.service-card:hover { border-color: var(--primary); box-shadow: 0 8px 32px rgba(26,111,168,0.12); transform: translateY(-3px); }
.service-icon { width: 52px; height: 52px; background: #e8f4fd; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; margin-bottom: 18px; }
.service-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.service-card > p { font-size: 0.9rem; color: var(--gray); margin-bottom: 20px; line-height: 1.6; }
.service-features-label { font-size: 0.75rem; font-weight: 700; color: var(--primary); letter-spacing: 1px; text-transform: uppercase; margin-bottom: 12px; }
.service-features { margin-bottom: 24px; }
.service-features li { display: flex; align-items: flex-start; gap: 8px; font-size: 0.88rem; color: var(--dark); padding: 4px 0; }
.service-features li::before { content: ""; width: 6px; height: 6px; background: var(--red); border-radius: 50%; margin-top: 7px; flex-shrink: 0; }
.btn-red-full { display: flex; align-items: center; justify-content: center; gap: 8px; width: 100%; padding: 13px; background: var(--red); color: #fff; font-weight: 600; font-size: 0.9rem; border-radius: 8px; border: none; cursor: pointer; transition: background var(--tr); }
.btn-red-full:hover { background: var(--red-dark); }
.services-more { text-align: center; margin-top: 36px; }
.projects-section { padding: 96px 0; background: var(--light-bg); }
.projects-filter { display: flex; justify-content: center; gap: 10px; margin-bottom: 40px; flex-wrap: wrap; }
.filter-btn { padding: 8px 20px; border-radius: 20px; border: 1.5px solid var(--border); background: var(--white); color: var(--gray); font-size: 0.88rem; font-weight: 500; cursor: pointer; transition: all var(--tr); }
.filter-btn:hover, .filter-btn.active { background: var(--red); border-color: var(--red); color: #fff; }
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.project-card { background: var(--white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); display: flex; flex-direction: column; transition: transform var(--tr), box-shadow var(--tr); }
.project-card:hover { transform: translateY(-4px); box-shadow: 0 12px 36px rgba(0,0,0,0.14); }
.project-image { height: 220px; overflow: hidden; flex-shrink: 0; }
.project-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.project-card:hover .project-image img { transform: scale(1.06); }
.project-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.project-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.project-category { display: inline-block; padding: 3px 10px; background: #e8f4fd; color: var(--primary); font-size: 0.75rem; font-weight: 600; border-radius: 20px; }
.project-year { font-size: 0.78rem; color: var(--gray); }
.project-body h3 { font-size: 1rem; font-weight: 700; color: var(--dark); margin-bottom: 8px; line-height: 1.4; }
.project-body p { font-size: 0.85rem; color: var(--gray); line-height: 1.6; flex: 1; margin-bottom: 14px; }
.project-location { display: flex; align-items: center; gap: 6px; font-size: 0.82rem; color: var(--gray); }
.projects-more { text-align: center; margin-top: 40px; }
.cta-section { padding: 80px 0; background: linear-gradient(135deg, #1a3a5c 0%, #1a6fa8 100%); text-align: center; }
.cta-section h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; color: #fff; margin-bottom: 14px; }
.cta-section p { font-size: 1rem; color: rgba(255,255,255,0.8); margin-bottom: 36px; max-width: 500px; margin-left: auto; margin-right: auto; }
.cta-btns { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
.btn-red-cta { display: inline-flex; align-items: center; gap: 8px; padding: 14px 28px; background: var(--red); color: #fff; font-weight: 600; font-size: 0.95rem; border-radius: 8px; border: none; cursor: pointer; transition: background var(--tr), transform var(--tr); }
.btn-red-cta:hover { background: var(--red-dark); transform: translateY(-2px); }
.btn-white-outline { display: inline-flex; align-items: center; gap: 8px; padding: 14px 28px; background: transparent; color: #fff; font-weight: 600; font-size: 0.95rem; border-radius: 8px; border: 1.5px solid rgba(255,255,255,0.5); cursor: pointer; transition: border-color var(--tr), background var(--tr); }
.btn-white-outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); }
.contact-section { padding: 96px 0; background: var(--light-bg); }
.contact-inner { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; align-items: start; }
.contact-info h3 { font-size: 1.3rem; font-weight: 700; color: var(--dark); margin-bottom: 28px; }
.contact-info-item { display: flex; gap: 16px; margin-bottom: 24px; }
.contact-info-icon { width: 44px; height: 44px; background: #e8f4fd; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; flex-shrink: 0; color: var(--primary); }
.contact-info-text strong { display: block; font-size: 0.88rem; font-weight: 700; color: var(--dark); margin-bottom: 4px; }
.contact-info-text span, .contact-info-text a { font-size: 0.88rem; color: var(--gray); display: block; line-height: 1.6; }
.contact-social { margin: 24px 0; }
.contact-social p { font-size: 0.85rem; font-weight: 600; color: var(--dark); margin-bottom: 12px; }
.social-icons { display: flex; gap: 10px; }
.social-icon { width: 38px; height: 38px; border-radius: 8px; border: 1.5px solid var(--border); display: flex; align-items: center; justify-content: center; font-size: 0.9rem; color: var(--gray); transition: all var(--tr); }
.social-icon:hover { border-color: var(--primary); color: var(--primary); background: #e8f4fd; }
.working-hours-box { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-top: 20px; }
.working-hours-box h4 { font-size: 0.88rem; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.working-hours-box p { font-size: 0.85rem; color: var(--gray); line-height: 1.8; }
.contact-form-wrap { background: var(--white); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.contact-form-wrap h3 { font-size: 1.2rem; font-weight: 700; color: var(--dark); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--dark); margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 11px 14px; border: 1.5px solid var(--border); border-radius: 8px; font-size: 0.9rem; font-family: inherit; color: var(--dark); background: var(--white); transition: border-color var(--tr), box-shadow var(--tr); outline: none; }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,111,168,0.1); }
.form-group textarea { resize: vertical; min-height: 120px; }
.btn-submit { width: 100%; padding: 13px; background: var(--red); color: #fff; font-size: 0.95rem; font-weight: 600; border: none; border-radius: 8px; cursor: pointer; transition: background var(--tr), transform var(--tr); display: flex; align-items: center; justify-content: center; gap: 8px; }
.btn-submit:hover:not(:disabled) { background: var(--red-dark); transform: translateY(-1px); }
.btn-submit:disabled { opacity: 0.65; cursor: not-allowed; }
.form-message { margin-top: 14px; padding: 12px 16px; border-radius: 8px; font-size: 0.9rem; display: none; }
.form-message.success { background: #e6f4ea; color: #276749; border: 1px solid #b2dfdb; display: block; }
.form-message.error { background: #fff5f5; color: #c53030; border: 1px solid #fed7d7; display: block; }
.site-footer { background: #0f1923; color: rgba(255,255,255,0.75); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-brand p { font-size: 0.88rem; line-height: 1.7; margin: 16px 0 20px; color: rgba(255,255,255,0.6); }
.footer-brand .logo-box { margin-bottom: 16px; }
.footer-brand .name { color: #fff; }
.footer-brand .sub { color: rgba(255,255,255,0.5); }
.footer-social { display: flex; gap: 10px; }
.footer-social a { width: 36px; height: 36px; border-radius: 8px; border: 1px solid rgba(255,255,255,0.2); display: flex; align-items: center; justify-content: center; font-size: 0.9rem; color: rgba(255,255,255,0.6); transition: all var(--tr); }
.footer-social a:hover { border-color: var(--primary); color: #fff; background: var(--primary); }
.footer-col h4 { font-size: 0.9rem; font-weight: 700; color: #fff; margin-bottom: 20px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 0.88rem; color: rgba(255,255,255,0.6); transition: color var(--tr); }
.footer-col ul li a:hover { color: #fff; }
.footer-contact-item { display: flex; gap: 10px; margin-bottom: 14px; font-size: 0.88rem; color: rgba(255,255,255,0.6); }
.footer-contact-item span:first-child { font-size: 1rem; flex-shrink: 0; margin-top: 1px; }
.footer-bottom { padding: 20px 0; text-align: center; font-size: 0.82rem; color: rgba(255,255,255,0.4); }
.banner-section { display: none; }
@media (max-width: 1024px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } .projects-grid { grid-template-columns: repeat(2, 1fr); } .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 768px) { .services-grid { grid-template-columns: 1fr; } .contact-inner { grid-template-columns: 1fr; } .form-row { grid-template-columns: 1fr; } .footer-grid { grid-template-columns: 1fr; gap: 32px; } .projects-grid { grid-template-columns: 1fr; } .stats-grid { grid-template-columns: repeat(2, 1fr); } .main-nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.1); padding: 12px 0; z-index: 999; } .main-nav.open { display: block; } .main-nav ul { flex-direction: column; gap: 0; } .main-nav a { padding: 12px 24px; border-radius: 0; } .nav-toggle { display: block; } .header-inner { position: relative; } .hero-content h1 { font-size: 2rem; } .hero-btns { flex-direction: column; } .btn-red, .btn-outline { width: 100%; justify-content: center; } }
@media (max-width: 480px) { .stats-grid { grid-template-columns: 1fr 1fr; } .cta-btns { flex-direction: column; align-items: center; } }